gdb/testsuite/gdb.dwarf2/dw2-unresolved.S

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2007-2020 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #define CONCAT1(a, b) CONCAT2(a, b)
  19 #define CONCAT2(a, b) a ## b
  20
  21 #ifdef SYMBOL_PREFIX
  22 # define SYMBOL(str)     CONCAT1(SYMBOL_PREFIX, str)
  23 #else
  24 # define SYMBOL(str)     str
  25 #endif
  26
  27         .data
  28
  29 /* VAR1 is wrong here, in the real inferior it is located on stack.  As both
  30    places are never modified and they are initialized to the same value it
  31    makes no difference.  Ensure the name clash for "var".  */
  32 SYMBOL(var1):   .byte   1
  33
  34         .globl  SYMBOL(var)
  35 SYMBOL(var):    .byte   2
  36
  37 /* Debug information */
  38
  39         .section .debug_info
  40 .Lcu1_begin:
  41         /* CU header */
  42         .4byte  .Lcu1_end - .Lcu1_start         /* Length of Compilation Unit */
  43 .Lcu1_start:
  44         .2byte  2                               /* DWARF Version */
  45         .4byte  .Labbrev1_begin                 /* Offset into abbrev section */
  46         .byte   4                               /* Pointer size */
  47
  48         /* CU die */
  49         .uleb128 1                              /* Abbrev: DW_TAG_compile_unit */
  50         .4byte  cu_text_end                     /* DW_AT_high_pc */
  51         .4byte  cu_text_start                   /* DW_AT_low_pc */
  52         .ascii  "dw2-unresolved-main.c\0"       /* DW_AT_name */
  53         .ascii  "GNU C 4.3.2\0"                 /* DW_AT_producer */
  54         .byte   1                               /* DW_AT_language (C) */
  55
  56 .Ltype_uchar:
  57         .uleb128        2                       /* Abbrev: DW_TAG_base_type */
  58         .ascii          "unsigned char\0"       /* DW_AT_name */
  59         .byte           1                       /* DW_AT_byte_size */
  60         .byte           7                       /* DW_AT_encoding */
  61
  62         /* main */
  63         .uleb128        3                       /* Abbrev: DW_TAG_subprogram */
  64         .byte           1                       /* DW_AT_decl_file */
  65         .byte           2                       /* DW_AT_decl_line */
  66         .ascii          "main\0"                /* DW_AT_name */
  67         .4byte          .Ltype_uchar-.Lcu1_begin        /* DW_AT_type */
  68         .4byte          cu_text_start           /* DW_AT_low_pc */
  69         .4byte          cu_text_end             /* DW_AT_high_pc */
  70
  71         .uleb128        4                       /* Abbrev: DW_TAG_variable (location) */
  72         .ascii          "var\0"                 /* DW_AT_name */
  73         .byte           2f - 1f                 /* DW_AT_location */
  74 1:      .byte           3                       /*   DW_OP_addr */
  75 /* See VAR1 definition why this DIE is not correct.  */
  76         .4byte          SYMBOL(var1)                    /*   <addr> */
  77 2:      .4byte          .Ltype_uchar-.Lcu1_begin        /* DW_AT_type */
  78
  79         .uleb128        6                       /* Abbrev: DW_TAG_lexical_block */
  80         .4byte          SYMBOL(extern_block_start)      /* DW_AT_low_pc */
  81         .4byte          SYMBOL(extern_block_end)        /* DW_AT_high_pc */
  82
  83         .uleb128        5                       /* Abbrev: DW_TAG_variable (extern) */
  84         .ascii          "var\0"                 /* DW_AT_name */
  85         .4byte          .Ltype_uchar-.Lcu1_begin        /* DW_AT_type */
  86         .byte           1                       /* DW_AT_external */
  87
  88         .byte           0                       /* End of children of the lexical block */
  89
  90         .byte           0                       /* End of children of main */
  91
  92         .byte           0                       /* End of children of CU */
  93
  94 .Lcu1_end:
  95
  96 /* Abbrev table */
  97         .section .debug_abbrev
  98 .Labbrev1_begin:
  99         .uleb128        1                       /* Abbrev code */
 100         .uleb128        0x11                    /* DW_TAG_compile_unit */
 101         .byte           1                       /* has_children */
 102         .uleb128        0x12                    /* DW_AT_high_pc */
 103         .uleb128        0x1                     /* DW_FORM_addr */
 104         .uleb128        0x11                    /* DW_AT_low_pc */
 105         .uleb128        0x1                     /* DW_FORM_addr */
 106         .uleb128        0x3                     /* DW_AT_name */
 107         .uleb128        0x8                     /* DW_FORM_string */
 108         .uleb128        0x25                    /* DW_AT_producer */
 109         .uleb128        0x8                     /* DW_FORM_string */
 110         .uleb128        0x13                    /* DW_AT_language */
 111         .uleb128        0xb                     /* DW_FORM_data1 */
 112         .byte           0x0                     /* Terminator */
 113         .byte           0x0                     /* Terminator */
 114
 115         .uleb128        2                       /* Abbrev code */
 116         .uleb128        0x24                    /* DW_TAG_base_type */
 117         .byte           0                       /* has_children */
 118         .uleb128        0x3                     /* DW_AT_name */
 119         .uleb128        0x8                     /* DW_FORM_string */
 120         .uleb128        0xb                     /* DW_AT_byte_size */
 121         .uleb128        0xb                     /* DW_FORM_data1 */
 122         .uleb128        0x3e                    /* DW_AT_encoding */
 123         .uleb128        0xb                     /* DW_FORM_data1 */
 124         .byte           0x0                     /* Terminator */
 125         .byte           0x0                     /* Terminator */
 126
 127         .uleb128        3                       /* Abbrev code */
 128         .uleb128        0x2e                    /* DW_TAG_subprogram */
 129         .byte           1                       /* has_children */
 130         .uleb128        0x3a                    /* DW_AT_decl_file */
 131         .uleb128        0xb                     /* DW_FORM_data1 */
 132         .uleb128        0x3b                    /* DW_AT_decl_line */
 133         .uleb128        0xb                     /* DW_FORM_data1 */
 134         .uleb128        0x3                     /* DW_AT_name */
 135         .uleb128        0x8                     /* DW_FORM_string */
 136         .uleb128        0x49                    /* DW_AT_type */
 137         .uleb128        0x13                    /* DW_FORM_ref4 */
 138         .uleb128        0x11                    /* DW_AT_low_pc */
 139         .uleb128        0x1                     /* DW_FORM_addr */
 140         .uleb128        0x12                    /* DW_AT_high_pc */
 141         .uleb128        0x1                     /* DW_FORM_addr */
 142         .byte           0x0                     /* Terminator */
 143         .byte           0x0                     /* Terminator */
 144
 145         .uleb128        4                       /* Abbrev code (location) */
 146         .uleb128        0x34                    /* DW_TAG_variable */
 147         .byte           0                       /* has_children */
 148         .uleb128        0x3                     /* DW_AT_name */
 149         .uleb128        0x8                     /* DW_FORM_string */
 150         .uleb128        0x2                     /* DW_AT_location */
 151         .uleb128        0xa                     /* DW_FORM_block1 */
 152         .uleb128        0x49                    /* DW_AT_type */
 153         .uleb128        0x13                    /* DW_FORM_ref4 */
 154         .byte           0x0                     /* Terminator */
 155         .byte           0x0                     /* Terminator */
 156
 157         .uleb128        5                       /* Abbrev code (extern) */
 158         .uleb128        0x34                    /* DW_TAG_variable */
 159         .byte           0                       /* has_children */
 160         .uleb128        0x3                     /* DW_AT_name */
 161         .uleb128        0x8                     /* DW_FORM_string */
 162         .uleb128        0x49                    /* DW_AT_type */
 163         .uleb128        0x13                    /* DW_FORM_ref4 */
 164         .uleb128        0x3f                    /* DW_AT_external */
 165         .uleb128        0xc                     /* DW_FORM_flag */
 166         .byte           0x0                     /* Terminator */
 167         .byte           0x0                     /* Terminator */
 168
 169         .uleb128        6                       /* Abbrev code */
 170         .uleb128        0x0b                    /* DW_TAG_lexical_block */
 171         .byte           1                       /* has_children */
 172         .uleb128        0x11                    /* DW_AT_low_pc */
 173         .uleb128        0x1                     /* DW_FORM_addr */
 174         .uleb128        0x12                    /* DW_AT_high_pc */
 175         .uleb128        0x1                     /* DW_FORM_addr */
 176         .byte           0x0                     /* Terminator */
 177         .byte           0x0                     /* Terminator */
 178
 179         .byte           0x0                     /* Terminator */
 180         .byte           0x0                     /* Terminator */